Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area
The Chociwel region is part of the Szczecin Trough and constitutes the northeastern segment of the extended Szczecin-Gorzów Synclinorium. Lower Jurassic reservoirs of high permeability of up to 1145 mD can discharge geothermal waters with a rate exceeding 250 m3/h and temperatures reach over 90°C in...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Sciendo
2015-09-01
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| Series: | Geologos |
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| Online Access: | https://doi.org/10.1515/logos-2015-0013 |
| _version_ | 1818730716141191168 |
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| author | Miecznik Maciej Sowiżdżał Anna Tomaszewska Barbara Pająk Leszek |
| author_facet | Miecznik Maciej Sowiżdżał Anna Tomaszewska Barbara Pająk Leszek |
| author_sort | Miecznik Maciej |
| collection | DOAJ |
| description | The Chociwel region is part of the Szczecin Trough and constitutes the northeastern segment of the extended Szczecin-Gorzów Synclinorium. Lower Jurassic reservoirs of high permeability of up to 1145 mD can discharge geothermal waters with a rate exceeding 250 m3/h and temperatures reach over 90°C in the lowermost part of the reservoirs. These conditions provide an opportunity to generate electricity from heat accumulated in geothermal waters using binary ORC (Organic Rankine Cycle) systems. A numerical model of the natural state and exploitation conditions was created for the Chociwel area with the use of TOUGH2 geothermal simulator (i.e., integral finite-difference method). An analysis of geological and hydrogeothermal data indicates that the best conditions are found to the southeast of the town of Chociwel, where the bottom part of the reservoir reaches 3 km below ground. This would require drilling two new wells, namely one production and one injection. Simulated production with a flow rate of 275 m3/h, a temperature of 89°C at the wellhead, 30°C injection temperature and wells being 1.2 km separated from each other leads to a small temperature drop and moderate requirements for pumping power over a 50 years’ time span. The ORC binary system can produce at maximum 592.5 kW gross power with the R227ea found as the most suitable working fluid. Geothermal brine leaving the ORC system with a temperature c. 53°C can be used for other purposes, namely mushroom growing, balneology, swimming pools, soil warming, de-icing, fish farming and for heat pumps. |
| first_indexed | 2024-12-17T23:06:12Z |
| format | Article |
| id | doaj.art-152e5d43470d4dbda0c613680df6d749 |
| institution | Directory Open Access Journal |
| issn | 2080-6574 |
| language | English |
| last_indexed | 2024-12-17T23:06:12Z |
| publishDate | 2015-09-01 |
| publisher | Sciendo |
| record_format | Article |
| series | Geologos |
| spelling | doaj.art-152e5d43470d4dbda0c613680df6d7492022-12-21T21:29:16ZengSciendoGeologos2080-65742015-09-0121318719610.1515/logos-2015-0013logos-2015-0013Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel areaMiecznik Maciej0Sowiżdżał Anna1Tomaszewska Barbara2Pająk Leszek3Mineral and Energy Economy Research Institute, Polish Academy of Sciences, Wybickiego 7, 31-261 Kraków, PolandAGH University of Science and Technology, Mickiewicza 30, 30-059 Kraków, PolandMineral and Energy Economy Research Institute, Polish Academy of Sciences, Wybickiego 7, 31-261 Kraków, PolandMineral and Energy Economy Research Institute, Polish Academy of Sciences, Wybickiego 7, 31-261 Kraków, PolandThe Chociwel region is part of the Szczecin Trough and constitutes the northeastern segment of the extended Szczecin-Gorzów Synclinorium. Lower Jurassic reservoirs of high permeability of up to 1145 mD can discharge geothermal waters with a rate exceeding 250 m3/h and temperatures reach over 90°C in the lowermost part of the reservoirs. These conditions provide an opportunity to generate electricity from heat accumulated in geothermal waters using binary ORC (Organic Rankine Cycle) systems. A numerical model of the natural state and exploitation conditions was created for the Chociwel area with the use of TOUGH2 geothermal simulator (i.e., integral finite-difference method). An analysis of geological and hydrogeothermal data indicates that the best conditions are found to the southeast of the town of Chociwel, where the bottom part of the reservoir reaches 3 km below ground. This would require drilling two new wells, namely one production and one injection. Simulated production with a flow rate of 275 m3/h, a temperature of 89°C at the wellhead, 30°C injection temperature and wells being 1.2 km separated from each other leads to a small temperature drop and moderate requirements for pumping power over a 50 years’ time span. The ORC binary system can produce at maximum 592.5 kW gross power with the R227ea found as the most suitable working fluid. Geothermal brine leaving the ORC system with a temperature c. 53°C can be used for other purposes, namely mushroom growing, balneology, swimming pools, soil warming, de-icing, fish farming and for heat pumps.https://doi.org/10.1515/logos-2015-0013szczecin troughgeothermal conditionsnumerical modelbinary systemorc |
| spellingShingle | Miecznik Maciej Sowiżdżał Anna Tomaszewska Barbara Pająk Leszek Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area Geologos szczecin trough geothermal conditions numerical model binary system orc |
| title | Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area |
| title_full | Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area |
| title_fullStr | Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area |
| title_full_unstemmed | Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area |
| title_short | Modelling geothermal conditions in part of the Szczecin Trough – the Chociwel area |
| title_sort | modelling geothermal conditions in part of the szczecin trough the chociwel area |
| topic | szczecin trough geothermal conditions numerical model binary system orc |
| url | https://doi.org/10.1515/logos-2015-0013 |
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